This is old news but just stumbled upon it and found it interesting.
Intuitively, I have known eggs from pastured-raised chickens are better. They look and taste better. Easier to peel, too. In 2009, Mother Earth News conducted a study comparing the nutritional value from pastured-raised to commercial-produced eggs.
To see the results, you can download the file at the end of the article or download it here:
Eggs chart pdf.pdf (793.7 KB)
The results show that pastured-raised eggs are more nutritious than commercially-raised eggs! The author hypes the fat that they have less cholesterol and saturated fat, which is not why they are more nutritious. (When are we going to get over the meme that colesterol and saturated fat is bad for you?) There is, of course, a trade-off in cost between the two types of eggs.
Be aware, eggs labeled “Cage-free” or “Range-free” are not the same as “Pasture-raised”. It just means they are not in cages but are allowed to roam around, usually in large warehouses but are fed the same crappy food as caged birds. Its is better for the birds, but the eggs are no better nutritionally than caged birds.
I am envious of those of you who have the means to raise your own pasture chickens.